RDL DB-SH1M Stereo Headphone Amplifier (Black)

RDL DB-SH1M Stereo Headphone Amplifier (Black)

RDL DB-SH1M Stereo Headphone Amplifier (Black)

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RDL DB-SH1M overview

  • 1Description

The black DB-SH1M Stereo Headphone Amplifier made by RDL is a dual channel headphone amplifier with balanced/unbalanced left and right inputs. Each input accepts operating levels between -20 dBV and +20 dBu. Prior to mounting the module, there are two recessed switches on the rear enclosure that are set up. One switch is for setting the input sensitivity and the other is the mode switch.

The mode switch selects between stereo and mono operation. In the mono position, the left input is used to drive both output channels. When the module is used in a monaural system, only the left channel input must be wired. The front panel level control is a long life potentiometer controlling matched VCAs. Audio does not pass through this control.

The output amplifiers deliver more than 50 mW into either high or low impedance headphones. Module operation is from a 24 VDC ground referenced power supply. This amplifier is designed to fit Decora style products and American electrical boxes.

Integral long-life VCA stereo level control
Balanced or unbalanced inputs
Switch-selectable input sensitivity
Switch-selectable mono (left) or stereo operation
Amplifier to drive high or low impedance headsets
Output: mini-jack
UPC: 813721015020
In the Box
RDL DB-SH1M Stereo Headphone Amplifier (Black)
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    RDL DB-SH1M specs

    Input 10 kΩ balanced or unbalanced bridging
    Input Level +4 dBu nominal (Low input sensitivity)
    -15 dBV nominal (High input sensitivity)
    Maximum Input Level +21 dBu (Low input sensitivity);
    +3 dBu (High input sensitivity)
    Output Signal 10 mW into 100 Ω (normal rated);
    Maximum Output Level 50 mW into 100 Ω
    Frequency Response 30 Hz to 20 kHz (±2 dB)
    THD + N < 0.5% @ 1 kHz
    Noise < -70 dB below normal operating level
    Gain User-adjustable on front panel; 18.5 dB (maximum, high input sensitivity) Unity (maximum, low input sensitivity)
    CMRR > 60 dB (50 to 120 Hz)
    Crosswalk Below noise floor (20 Hz to 20 kHz)
    Power Requirement 24 VDC @ 50 mA
    Dimensions 4.1 x 1.7" (10.4 x 4.2 cm) for Decora mounting enclosures
    Weight 0.31 oz (0.1 kg)
    Packaging Info
    Package Weight 0.5 lb
    Box Dimensions (LxWxH) 4.8 x 4.3 x 2.2"

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